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Objective 1. Define the extent of straying Carcass data to predict straying rates Naturally produced (unmarked) Hatchery supplementation (uniquely marked) Hatchery general production (uniquely marked) Treatments streams: General production Control streams: General production ISS production

15
Straying was widespread and often substantial Detected in all but one study stream Exceeded 50% in some treated streams Objective 1. Define the extent of straying Carcass data to predict straying rates Naturally produced (unmarked) Hatchery supplementation (uniquely marked) Hatchery general production (uniquely marked) Treatments streams: General production Control streams: General production ISS production

44
Loss of streams may not compromise statewide evaluations but effects on other comparisons need to be examined Results Statistical power maintained when 25% of streams removed Study Deviations Research / management conflicts Numerical power analysis 25% of streams removed in four test simulations Prototype analysis applied Results compared to baseline prototype